Security Control Assessor, Lead

Booz Allen Hamilton•Aberdeen Proving Ground, MD

5d•$99,000 - $225,000•Remote

About The Position

The Lead Security Control Assessor directs the SCA workstream and provides independent cybersecurity assessment leadership for CDAO systems and environments to the ISSM. The Lead SCA owns assessment strategy, quality standards, stakeholder coordination, risk adjudication, and final review of Security Assessment Plans (SAPs) and Security Assessment Reports (SARs). The position advises technical leadership and Authorizing Official (AO) stakeholders on control effectiveness, authorization readiness, and residual cybersecurity risk. In this role you will be responsible for developing and governing the assessment approach, schedule, evidence standards, test procedures, and quality-control framework for the SCA team.

Requirements

8+ years of experience with cybersecurity including substantial DoD or federal RMF, security assessment, security engineering, or authorization
Experience with eMASS, analyzing STIG, SCAP, ACAS findings, POA&Ms, architecture, inherited controls, compensating controls, and technical evidence
Experience leading security control assessments and producing or approving SSPs, SAPs, SARs, POA&Ms, risk assessments, and authorization packages
Experience with administration of Windows, Linux, AWS Cloud, and containerization systems and software configuration
Experience with technical writing, facilitation, quality-assurance, team leadership, and stakeholder-management capabilities
Knowledge of NIST SP 800-53, NIST SP 800-37, DoD RMF, STIGs, vulnerability management, and security-control assessment methodology
Ability to evaluate complex enterprises, cloud, hybrid, containerized, data, and AI-enabled architectures and communicate risks at the AO and executive levels
Ability to lead, organize, and complete various cybersecurity testing events including using applicable automated security scanning tools, system required manual STIGs and SRGs and compiling, reviewing, and analyzing results and providing to the ISSM for review and finalization
TS/SCI clearance
Bachelor's degree in a technical field such as Engineering or Cyber

Nice To Haves

Experience reviewing system connection requests for completion and ensure that requirements are met and make recommendations to the ISSM for approval
Experience performing dynamic security assessments triggered by system changes, threat changes, vulnerabilities, incidents, or mission conditions
Ability to communicate cybersecurity test result outcomes, risks, and suggest fixes to the project engineering team to fix or mitigate potential risks and document Plan of Action and Milestone (POA&M) development and tracking, driving remediation of vulnerabilities to a level acceptable to the Authorizing Official (AO)
Ability to adjudicate complex findings, evaluate compensating controls and mitigations, validate risk determinations, and advise on residual mission risk
Ability to lead quarterly Cyber Resilience and Continuous Monitoring reviews

Responsibilities

Provide eMASS administration, analyze STIG, SCAP, ACAS findings, POA&Ms, architecture, inherited controls, compensating controls, and technical evidence.
Work with the project ISSM to understand customer cybersecurity RMF requirements applicable to the systems in their respective environments.
Lead independent security control assessments in accordance with DoD RMF, NIST guidance, applicable DoD cybersecurity policy, and organizational assessment procedures.
Brief findings and risk recommendations to the ISSM, AO representative, and AO-level stakeholders.
Develop all system applicable RMF Body of Evidence (BOE) documentation ensuring accuracy, relevance, and completion to meet requirements and input BOE documentation into AO approved databases such as eMASS or AO specific SharePoint site.
Review and approve SAPs and SARs for technical accuracy, evidence sufficiency, traceability, consistency, and defensibility before stakeholder delivery.
Coordinate with system owners, ISSMs and ISSOs, cybersecurity engineers, administrators, developers, program leadership, control providers, and AO representatives.
Review system boundaries, data flows, external interfaces, interconnections, inherited controls, common-control dependencies, and significant changes.
Oversee assessment execution for ATO, reauthorization, annual assessment, significant-change assessment, and continuous monitoring activities.
Brief assessment status, systemic risks, unresolved findings, remediation priorities, and authorization recommendations to senior stakeholders.
Mentor assessors, calibrate assessment judgments, and ensure independence and objectivity across the assessment lifecycle.
Develop and maintain strong relationships with stakeholders across the organization.